Installation of used pre-fabricated garages in two Ammunition Storage Sites owed by the Ministry of Defense of Bosnia and Herzegovina located in Hadzici and Mrkonjic Grad, Bosnia and Herzegovina. Metal structures currently stored in respective sites need to be treated to remove rust, apply anti-corrosion protection to metal elements, prepare concrete foundation, erect heavy units of metal garages, assemble using lifting devices (for example cranes), connected to water, electricity and sewage infrastructure.